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    <html lang="zh-CN">
    <head>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <title>SpringBoot3这些技术确实快了 - 交互式测验</title>
      <style>
        @import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&display=swap');
        
        body {
          font-family: 'Noto Sans SC', sans-serif;
          background-color: #f4f7f9;
          color: #333;
          display: flex;
          justify-content: center;
          align-items: center;
          min-height: 100vh;
          margin: 0;
          padding: 20px;
          box-sizing: border-box;
        }
        
        .main-wrapper {
            position: relative;
            width: 100%;
            max-width: 900px; /* Wider to accommodate buttons */
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .quiz-container {
          background-color: #ffffff;
          border-radius: 16px;
          box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
          width: 100%;
          max-width: 700px;
          overflow: hidden;
          z-index: 10;
        }

        .quiz-header {
          background-color: #4a90e2;
          color: white;
          padding: 20px 30px;
          text-align: center;
        }

        .quiz-header h1 {
          margin: 0;
          font-size: 24px;
          font-weight: 700;
        }
        
        .quiz-header p {
            margin: 5px 0 0;
            font-size: 14px;
            opacity: 0.9;
        }

        .quiz-body {
          padding: 30px;
        }

        .progress-bar {
            display: none; /* 隐藏进度条 */
            width: 100%;
            background-color: #e0e0e0;
            border-radius: 5px;
            height: 10px;
            margin-bottom: 20px;
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        #progress-indicator {
            height: 100%;
            width: 0%;
            background-color: #4caf50;
            border-radius: 5px;
            transition: width 0.3s ease;
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        #question-container {
          margin-bottom: 20px;
        }

        #question-text {
          font-size: 18px;
          font-weight: 500;
          line-height: 1.6;
          margin-bottom: 25px;
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        .options-list {
          list-style: none;
          padding: 0;
          margin: 0;
        }

        .option-item {
          background-color: #f8f9fa;
          border: 1px solid #dee2e6;
          border-radius: 8px;
          padding: 15px;
          margin-bottom: 12px;
          cursor: pointer;
          transition: background-color 0.2s ease, border-color 0.2s ease;
        }

        .option-item:hover {
          background-color: #e9ecef;
        }
        
        .option-item.selected {
            background-color: #d1e7fd;
            border-color: #4a90e2;
        }

        .quiz-footer {
          padding: 20px 30px;
          display: flex;
          justify-content: space-between; /* 将按钮分布在两侧 */
          align-items: center;
          min-height: 65px; /* Reserve space */
        }

        .nav-btn {
          background-color: #4a90e2;
          color: white;
          border: none;
          border-radius: 8px;
          padding: 10px 20px;
          font-size: 16px;
          font-weight: 500;
          cursor: pointer;
          transition: background-color 0.2s ease, transform 0.2s ease;
          box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        }
        
        #next-btn {
            background-color: #28a745;
        }

        .nav-btn:hover {
          background-color: #357abd;
          transform: scale(1.05);
        }
        
        .nav-btn:disabled {
            background-color: #a0c3e8;
            cursor: not-allowed;
            opacity: 0.7;
        }

        #result-container {
            border-top: 1px solid #eee;
        }
        
        .result-box {
            border-radius: 8px;
            padding: 20px;
            margin-top: 20px;
        }
        
        .result-box.correct {
            background-color: #d4edda;
            border: 1px solid #c3e6cb;
            color: #155724;
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        .result-box.incorrect {
            background-color: #f8d7da;
            border: 1px solid #f5c6cb;
            color: #721c24;
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        .result-box h3 {
            margin-top: 0;
        }

        .explanation-text {
            margin-top: 15px;
            line-height: 1.7;
        }
        
        .source-text {
            font-style: italic;
            font-size: 14px;
            margin-top: 15px;
            color: #555;
        }

        
        .final-score-container {
            padding: 40px;
            text-align: center;
        }
        .final-score-container h2 {
            margin-top: 0;
            margin-bottom: 30px;
        }
        .score-summary {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .score-card {
            background-color: #f8f9fa;
            border-radius: 12px;
            padding: 20px;
            width: 180px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            border: 1px solid #e9ecef;
        }
        .score-card h3 {
            margin: 0 0 10px;
            font-size: 16px;
            font-weight: 500;
            color: #555;
        }
        .score-card p {
            margin: 0;
            font-size: 28px;
            font-weight: 700;
            color: #333;
        }
        .score-details table {
            width: 100%;
            font-size: 16px;
        }
        .score-details td {
            padding: 4px 0;
        }
        .score-details td:last-child {
            text-align: right;
            font-weight: 700;
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        .report-actions button {
            background-color: #fff;
            border: 1px solid #ccc;
            border-radius: 8px;
            padding: 12px 25px;
            font-size: 16px;
            cursor: pointer;
            margin: 0 10px;
            transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
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        .report-actions button:hover {
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            transform: translateY(-2px);
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        .report-actions button.primary {
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            color: white;
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        .report-actions button.primary:hover {
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        .hint-container {
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            border: 1px solid #b2ebf2;
            border-radius: 8px;
            padding: 15px;
            margin-top: 20px;
            color: #006064;
            font-size: 15px;
            line-height: 1.6;
            display: none; /* 默认隐藏 */
        }
      </style>
    </head>
    <body>
      <div class="main-wrapper">
          <div class="quiz-container">
            <div class="quiz-header">
              <h1>SpringBoot3这些技术确实快了 - 交互式测验</h1>
              <p>检验你对文档内容的理解程度</p>
            </div>
            <div id="quiz-content">
                <div class="quiz-body">
                    <div class="progress-bar">
                        <div id="progress-indicator"></div>
                    </div>
                    <div id="question-container">
                      <p id="question-text"></p>
                      <ul class="options-list" id="options-list"></ul>
                    </div>
                    <div id="result-container"></div>
                    <div id="hint-container" class="hint-container"></div>
                </div>
                <div class="quiz-footer" id="quiz-footer">
                  <button id="prev-btn" class="nav-btn">上一题</button>
                  <button id="hint-btn" class="nav-btn" style="background-color: #ffc107; color: #333; box-shadow: 0 4px 12px rgba(255,193,7,0.3);">提示</button>
                  <button id="next-btn" class="nav-btn">下一题</button>
                </div>
            </div>
          </div>
      </div>

      <script>
        const quizData = [
  {
    "question": "根据文档，将SpringBoot 3应用编译为GraalVM原生镜像（Native Image）带来的最核心优势是什么？",
    "options": [
      "自动优化SQL查询性能",
      "大幅减少启动时间和内存占用",
      "简化了多线程编程模型",
      "增强了代码的跨平台兼容性"
    ],
    "correctAnswerIndex": 1,
    "explanation": "GraalVM原生镜像技术通过预先（AOT）编译，将Java应用编译为本地机器码。这避免了JVM的启动和JIT编译的开销，从而使应用的启动时间从秒级降至毫秒级，并显著减少了内存占用，特别适合云原生和Serverless场景。",
    "source": "文档中「一、SpringBoot3性能飞跃的核心」-「2. GraalVM原生镜像」部分",
    "hint": "文档提到这项技术对于云环境中的'弹性扩展'尤为重要，因为它能将启动时间缩短到100毫秒以内。"
  },
  {
    "question": "文档指出，SpringBoot 3基于Java 17，从而获得了性能提升。其中提到的哪一个垃圾收集器（GC）能够将暂停时间控制在10毫秒以内，有效处理TB级别的堆内存？",
    "options": [
      "Z垃圾收集器 (ZGC)",
      "G1 GC",
      "Serial GC",
      "Parallel GC"
    ],
    "correctAnswerIndex": 0,
    "explanation": "文档明确提到了Z垃圾收集器（ZGC）是Java 17中一项重要的性能优化。它的设计目标是实现低延迟，即使在处理非常大的堆内存（TB级别）时，也能将GC暂停时间控制在10毫秒以内，这对于需要持续高可用和低延迟的服务至关重要。",
    "source": "文档中「一、SpringBoot3性能飞跃的核心」-「1. Java 17的底层优化如何加速应用运行」部分",
    "hint": "查看Java 17底层优化部分，寻找那个以字母'Z'开头的、被特别强调用于低延迟场景的垃圾收集器。"
  },
  {
    "question": "在微服务架构中，SpringBoot 3推荐使用哪种技术来替代传统的RestTemplate，以实现更高效的非阻塞服务间通信？",
    "options": [
      "RestTemplate",
      "WebClient",
      "SOAP",
      "Feign Client"
    ],
    "correctAnswerIndex": 1,
    "explanation": "文档在“服务间通信的优化”一节中明确指出，SpringBoot 3改进了服务间通信，特别是通过WebClient替代RestTemplate，因为它提供了基于响应式编程模型的非阻塞I/O通信方式，能更有效地利用系统资源，提高吞吐量。",
    "source": "文档中「二、微服务架构的变化」-「3. 服务间通信的优化」部分",
    "hint": "文档中提供了一个使用Mono和响应式API进行服务调用的代码示例，这个示例使用的客户端是什么？"
  },
  {
    "question": "SpringBoot 3引入了哪种新特性，通过使用接口和注解（如@HttpExchange）来极大简化HTTP API的调用过程？",
    "options": [
      "声明式HTTP客户端",
      "增强的Servlet过滤器",
      "自动配置的RestTemplate",
      "响应式WebClient构建器"
    ],
    "correctAnswerIndex": 0,
    "explanation": "该特性被称为“声明式HTTP客户端”。开发者只需定义一个Java接口，并使用@HttpExchange等注解来描述HTTP请求的细节（如URL、方法、参数等），Spring就会自动为其生成实现类。这大大减少了编写和维护HTTP调用所需的样板代码。",
    "source": "文档中「三、开发体验的变化」-「1. 声明式HTTP客户端」部分",
    "hint": "这一新特性的标题直接描述了它的本质：通过'声明'的方式来定义客户端，而不是手动编写实现代码。"
  },
  {
    "question": "根据文档中关于Spring Security 6的示例，其配置方式相比旧版本有何显著变化，从而使代码更简洁？",
    "options": [
      "强制使用XML文件进行所有配置",
      "必须为每个Controller类添加@EnableWebSecurity注解",
      "引入了基于Lambda表达式的链式DSL（领域特定语言）配置",
      "完全移除了对CSRF的防护"
    ],
    "correctAnswerIndex": 2,
    "explanation": "Spring Security 6大量采用Lambda表达式来构建其DSL，使得安全规则的配置更加流畅和直观。例如，`authorizeHttpRequests(authorize -> ...)` 和 `csrf(csrf -> ...)` 的写法替代了旧版本中繁琐的`.and()`链式调用，提高了代码的可读性和简洁性。",
    "source": "文档中「四、安全框架的升级」-「1. Spring Security 6的新特性」部分",
    "hint": "观察`TsSecurityConfig`示例代码中`securityFilterChain`方法的实现，注意其配置授权和CSRF等规则时所使用的语法风格。"
  },
  {
    "question": "为了支持响应式数据库访问，SpringBoot 3增强了对R2DBC的支持。文档中的示例展示了哪一个接口，用于实现非阻塞的CRUD数据操作？",
    "options": [
      "JdbcTemplate",
      "JpaRepository<T, ID>",
      "CrudRepository<T, ID>",
      "ReactiveCrudRepository<T, ID>"
    ],
    "correctAnswerIndex": 3,
    "explanation": "R2DBC (Reactive Relational Database Connectivity) 是一种响应式数据库访问规范。在Spring Data中，`ReactiveCrudRepository`是专门为R2DBC设计的接口，它提供了一系列返回`Mono`和`Flux`的响应式方法（如`save`, `findById`, `findAll`），从而实现完全非阻塞的数据访问。",
    "source": "文档中「五、数据访问层的显著提升」-「2. 响应式数据库访问」部分",
    "hint": "在'响应式数据库访问'部分的`TsUserRepository`接口示例中，它继承了哪个特定的Spring Data仓库接口？"
  },
  {
    "question": "文档中的`TsProductService`代码示例展示了SpringBoot 3在依赖注入方面的一个简化。这个简化是什么？",
    "options": [
      "所有依赖必须通过setter方法注入",
      "依赖注入只能通过XML配置完成",
      "构造器注入不再需要显式使用@Autowired注解",
      "必须使用@Resource注解替代@Autowired"
    ],
    "correctAnswerIndex": 2,
    "explanation": "在较新版本的Spring框架（包括SpringBoot 3）中，如果一个类只有一个构造函数，Spring会自动使用该构造函数进行依赖注入，无需在构造函数上添加`@Autowired`注解。这使得代码更加干净和简洁，是官方推荐的最佳实践。",
    "source": "文档中「三、开发体验的变化」-「2. 依赖注入的简化与增强」部分",
    "hint": "仔细观察`TsProductService`类的构造函数，并注意代码注释中提到的关于注解的信息。"
  }
];
        console.log("Quiz Data:", JSON.parse(JSON.stringify(quizData))); // 添加这行用于调试，以可展开的JSON格式输出
        
        let currentQuestionIndex = 0;
        let score = 0;
        // 存储每个问题的回答状态
        const userAnswers = new Array(quizData.length).fill(null); 

        const questionTextEl = document.getElementById('question-text');
        const optionsListEl = document.getElementById('options-list');
        const resultContainerEl = document.getElementById('result-container');
        const quizContentEl = document.getElementById('quiz-content');
        const progressIndicatorEl = document.getElementById('progress-indicator');
        const prevBtn = document.getElementById('prev-btn');
        const nextBtn = document.getElementById('next-btn');
        const hintBtn = document.getElementById('hint-btn');
        const hintContainerEl = document.getElementById('hint-container');

        function loadQuestion() {
          resultContainerEl.innerHTML = '';
          optionsListEl.innerHTML = '';
          hintContainerEl.style.display = 'none'; // 隐藏提示
          
          if (currentQuestionIndex >= quizData.length) {
            showFinalScore();
            return;
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          updateProgress();

          const currentQuestion = quizData[currentQuestionIndex];
          questionTextEl.textContent = `(${currentQuestionIndex + 1}/${quizData.length}) ${currentQuestion.question}`;
          
          currentQuestion.options.forEach((optionText, index) => {
            const li = document.createElement('li');
            li.className = 'option-item';
            li.textContent = optionText;
            li.dataset.index = index; // Store index in a data attribute
            // 如果这道题已经回答过，恢复状态
            if (userAnswers[currentQuestionIndex] !== null) {
                if (index === userAnswers[currentQuestionIndex]) {
                    li.classList.add('selected');
                }
            }
            optionsListEl.appendChild(li);
          });

          // 如果已经回答过，直接显示结果
          if (userAnswers[currentQuestionIndex] !== null) {
              const isCorrect = userAnswers[currentQuestionIndex] === currentQuestion.correctAnswerIndex;
              showResult(isCorrect, currentQuestion);
          }
          
          updateNavigationButtons();
          updateProgress();
        }

        function selectOption(optionIndex) {
            userAnswers[currentQuestionIndex] = optionIndex;
            const currentQuestion = quizData[currentQuestionIndex];
            const isCorrect = optionIndex === currentQuestion.correctAnswerIndex;

            // 重新计算分数
            score = userAnswers.reduce((acc, answer, index) => {
                return answer === quizData[index].correctAnswerIndex ? acc + 1 : acc;
            }, 0);

            showResult(isCorrect, currentQuestion);
            updateNavigationButtons();
        }
        
        function updateProgress() {
            const answeredQuestions = userAnswers.filter(answer => answer !== null).length;
            const progressPercentage = (answeredQuestions / quizData.length) * 100;
            progressIndicatorEl.style.width = `${progressPercentage}%`;
        }
        
        function updateNavigationButtons() {
            prevBtn.style.display = 'block';
            nextBtn.style.display = 'block';
            hintBtn.style.display = 'block'; // 显示提示按钮

            prevBtn.disabled = currentQuestionIndex === 0;
            nextBtn.disabled = false; // 最后一题时，下一题按钮不禁用，而是用于显示报告
            nextBtn.textContent = (currentQuestionIndex === quizData.length - 1) ? '查看报告' : '下一题';
            
            // 如果当前问题没有提示，则禁用提示按钮并隐藏提示内容
            if (!quizData[currentQuestionIndex].hint) {
                hintBtn.disabled = true;
                hintContainerEl.style.display = 'none';
                hintContainerEl.textContent = ''; // 清除旧的提示内容
            } else {
                hintBtn.disabled = false;
            }
        }

        function showResult(isCorrect, questionData) {
            resultContainerEl.innerHTML = ''; // 清空之前的结果
            const resultBox = document.createElement('div');
            resultBox.className = `result-box ${isCorrect ? 'correct' : 'incorrect'}`;
            
            let html = `<h3>${isCorrect ? '回答正确！' : '回答错误'}</h3>`;
            if (!isCorrect) {
                html += `<p><strong>正确答案是：</strong> ${questionData.options[questionData.correctAnswerIndex]}</p>`;
            }
            html += `<div class="explanation-text">${questionData.explanation}</div>`;
            html += `<div class="source-text">来源: ${questionData.source}</div>`;
            
            resultBox.innerHTML = html;
            resultContainerEl.appendChild(resultBox);

            // 禁用所有选项的点击事件，并高亮正确/错误答案
            Array.from(optionsListEl.children).forEach((child, index) => {
                child.style.pointerEvents = 'none';
                // 高亮正确答案
                if (index === questionData.correctAnswerIndex) {
                    child.classList.add('correct'); // 需要添加CSS样式
                    child.style.backgroundColor = '#d4edda';
                    child.style.borderColor = '#c3e6cb';
                }
                // 如果选错了，高亮错误选项
                if (!isCorrect && index === userAnswers[currentQuestionIndex]) {
                    child.classList.add('incorrect'); // 需要添加CSS样式
                    child.style.backgroundColor = '#f8d7da';
                    child.style.borderColor = '#f5c6cb';
                }
            });
        }

        function goToNextQuestion() {
            if (currentQuestionIndex < quizData.length - 1) {
                currentQuestionIndex++;
                loadQuestion();
            } else {
                showFinalScore();
            }
        }

        function goToPreviousQuestion() {
            if (currentQuestionIndex > 0) {
                currentQuestionIndex--;
                loadQuestion();
            }
        }
        
        function showHint() {
            const currentQuestion = quizData[currentQuestionIndex];
            if (currentQuestion.hint) {
                hintContainerEl.textContent = currentQuestion.hint;
                hintContainerEl.style.display = 'block';
            } else {
                hintContainerEl.style.display = 'none';
            }
        }

        function showFinalScore() {
            document.querySelector('.quiz-body').style.display = 'none';
            document.getElementById('quiz-footer').style.display = 'none';

            const correctCount = score;
            const totalQuestions = quizData.length;
            const answeredCount = userAnswers.filter(a => a !== null).length;
            const wrongCount = answeredCount - correctCount;
            const skippedCount = totalQuestions - answeredCount;
            const accuracy = totalQuestions > 0 ? Math.round((correctCount / totalQuestions) * 100) : 0;
            const errorRate = totalQuestions > 0 ? Math.round((wrongCount / totalQuestions) * 100) : 0;

            const finalScoreHtml =
                '<div class="final-score-container">' +
                '<h2>答题报告</h2>' +
                '<div class="score-summary">' +
                '<div class="score-card">' +
                '<h3>得分</h3>' +
                '<p>' + correctCount + ' / ' + totalQuestions + '</p>' +
                '</div>' +
                '<div class="score-card">' +
                '<h3>正确率</h3>' +
                '<p>' + accuracy + '%</p>' +
                '</div>' +
                '<div class="score-card">' +
                '<h3>错误率</h3>' +
                '<p>' + errorRate + '%</p>' +
                '</div>' +
                '<div class="score-card score-details">' +
                '<table>' +
                '<tr><td>正确</td><td>' + correctCount + '</td></tr>' +
                '<tr><td>错误</td><td>' + wrongCount + '</td></tr>' +
                '<tr><td>未答</td><td>' + skippedCount + '</td></tr>' +
                '</table>' +
                '</div>' +
                '</div>' +
                '<div class="report-actions">' +
                '<button id="review-btn">回顾测验</button>' +
                '<button class="primary" onclick="location.reload()">再试一次</button>' +
                '</div>' +
                '</div>';

            let reportEl = document.querySelector('.final-score-container');
            if (reportEl) {
                reportEl.remove();
            }
            quizContentEl.insertAdjacentHTML('beforeend', finalScoreHtml);
            document.getElementById('review-btn').addEventListener('click', reviewQuiz);
        }

        function reviewQuiz() {
            const reportEl = document.querySelector('.final-score-container');
            if (reportEl) {
                reportEl.remove();
            }

            document.querySelector('.quiz-body').style.display = 'block';
            document.getElementById('quiz-footer').style.display = 'flex';
            
            currentQuestionIndex = 0;
            loadQuestion();
            updateNavigationButtons(); // Ensure nav buttons are correctly displayed
        }

        // Event Delegation for options
        optionsListEl.addEventListener('click', (event) => {
            if (event.target && event.target.matches('li.option-item')) {
                // Check if the question has already been answered
                if (userAnswers[currentQuestionIndex] === null) {
                    const selectedIndex = parseInt(event.target.dataset.index, 10);
                    selectOption(selectedIndex);
                }
            }
        });

        prevBtn.addEventListener('click', goToPreviousQuestion);
        nextBtn.addEventListener('click', goToNextQuestion);
        hintBtn.addEventListener('click', showHint);
        
        // 初始加载
        loadQuestion();
      </script>
    </body>
    </html>
  